Tire.



No. 840,209. I PATENTED JAN. 1, 1907.-

G. E. HEEL-BIA.-

IIRE. APPLIOATION FILED SEPT. 29, 1905.-

UNITED STATES PATENT OFFICE.

GEORGE EDWARD HEYL-DIA, OF STRETTON, NEAR WARRINGTON.

- ENGLAND.

TIRE.

Patented Jan. 1, 1907.

Application filed September 29,1905. Serial No. 280,565.

To all whom it may concern:

,Be it known that I, GEORGE EDWARD HEYL-DIA, a subject of the King of Great Britain, and a resident of Stretton,

near WarringtOn, England, have invented certain new and useful Improvements in Tires, of which the following is a specification.

' I This invention relates to certain novel and.

useful 'mprovements in the construction of rubber tires. Y

In the resent instance I have particularly in view t e-construction of a non-punctur able tire andone' which will embody the essential and desired features-of cheapness and durability; I

With the above-recited objects andothers of a similar nature in view my invention con- I sists -of the construction, combinat on, and

arrangement of parts set forth in andfalling within the scope of the ap ended claims.

In the accompanying rawings like charaoters of reference indicate like parts mall I the views.

Figure. 1 is a view in elevation of a tire embodying myimprovement; Fig. 2 is an endview of a tire, partiallyin elevation and par-' tially in section: v

tail view of a portion of the tire,

Fig. 3 is an enlarged departs of. the

' .rubber coating, and canvas being broken sired eharacterfupon 'w as at 7, Fig. 3, and such mass of rubber forming a layercontaining a percentage 8, desi throng layers.

' larged, bear against the fabric.

f of sulfur difiering from the per 0 vThe tread portion or periphery of the tire is rovided with studs or projections e to be embedded in and'extend the rubber layers until the base portions 9 of such studs, which are sli htly en- T e studs 8 are intended to have their tread ends pref erably project slightlybeyond the tread porcentage sulfur contained in the other tion of the main body of the tire; The tire after having been built up in thedescribed manneris placed in a vulcanizing-mold, such as shown at A in Fig. 4, and vulcanized by any well known method. The result is a tire the rubber part of which consists of layers of rubber of varying hardness, which gives great resiliency to the tire and at the same time rovldes a structure which is non puncturab e.', The tread-studs 8 are formed from the rubber body portion of the tire, the layers of hardpned rubber forming the latter being molded integral with the softer studs of the tread.

While I have herein shown and described one particular manner of forming my tire, I wi h it to be understood that I do not confine myself to the recise details recited, as there may be mod' cation and variation, so long as the ririciple of constructing a tire of layers of ru her 0 varying hardness is main: tained.- g

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is- 1 A'tire comprising a fabric havin a plurali'ty of layers of rubber thereon, eac layer differing in' hardness from the others, and studs extending from the outer surface of the fabric through the rubber portion of ,the tire out to the tread-surface thereof.

2. A tire com rising afabric', layers of rubber of varying ardness applied to said fabers molded into extending from the ric', and rubber stud mem the layers of rubber'and '.of rubber also differing in hardness and resiliency outer surface of the fabric portion of the tire through to the tread portion thereof.

3. A tire comprising a fabric revided with layers of rubber compound, eac layer differing in hardness from the others and studs of relatively soft rubber embedded in the layers of rubber, to be integral therewith.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE EDWARD HEYL-DIA.

Witnesses:

- R. B. GAVANAGH,

Jos. J. PIERANDO. 

